WinRadio products are available only to customers in the U.S. and Canada.
The Cable has a Macintosh standard (Mini-DIN) connector which plugs to the computer, and a DB-9 serial connector which is compatible with the WR-1550e receiver serial port. No special software driver is necessary. The cable also contains two ferrite EMI suppressors which serve to reduce electromagnetic interference and maximize the performance of the receiver.
Native MacOS software for such arrangement (MacRadio) is available for free download.